UPD4990AG Renesas Electronics America, UPD4990AG Datasheet - Page 8

• Manufacturer Part Number: UPD4990AG
• Manufacturer: Renesas Electronics America

Specifications of UPD4990AG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

COMMAND SPECIFICATIONS
6
Commands input from C
Shift register 40 bit (The year function is ineffective.)
(Operates as the existing PD1990AC in other than test mode)
Serial data commands
Set [C
Shift register 52 bit (The year function is effective.)
2
, C
* The test mode is cancelled by [C2, C1, C0] = [0, 0, 0] to [1, 1, 0].
When serial data commands are used, C
C
C
0
0
0
0
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
, C
3
2
'
0
] = [1, 1, 1] at all time.
C
C
0
0
1
1
0
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2
1
'
C
C
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
, C
'
1
, and C
C
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
'
Register Hold
Register Shift
Time Set & Counter Hold
Time Read
TP = 64 Hz
TP = 256 Hz
TP = 2 048 Hz
Serial command transfer mode
2
pins (1 ...H, 0 ...L)
Register Hold
Register Shift
Time Set & Counter Hold
Time Read
TP = 64 Hz
TP = 256 Hz
TP = 2 048 Hz
TP = 4 096 Hz
TP = 1 s interval set (counter reset & start)
TP = 10 s interval set (counter reset & start)
TP = 30 s interval set (counter reset & start)
TP = 60 s interval set (counter reset & start)
Interval Output Flag Reset
Interval Timer Clock Run
Interval Timer Clock Stop
TEST MODE SET
0
, C
1
, and C
FUNCTION
2
pins should be connected V
DATA OUT = 1 Hz
DATA OUT = [LSB] = 0 or 1
DATA OUT = [LSB] = 0 or 1
DATA OUT = 1 Hz
FUNCTION
DATA OUT = 1 Hz
DATA OUT = [LSB] = 0 or 1
DATA OUT = [LSB] = 0 or 1
DATA OUT = 1 Hz
DD
pin.
PD4990A